yearv=2025 && monthv=01 && dayhourv=0712 && curl -s "http://hqlx27.ust.hk/~arcop/WRF_for_guangzhou/$yearv/$yearv$monthv/$yearv$monthv$dayhourv/" | grep -oP 'href="\./\K[^"]+' | xargs -I {} curl -O "http://hqlx27.ust.hk/~arcop/WRF_for_guangzhou/$yearv/$yearv$monthv/$yearv$monthv$dayhourv/{}"